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1540024428 = 223128335369
BaseRepresentation
bin101101111001010…
…1110100001101100
310222022211100100210
41123302232201230
511123221240203
6412452022420
753106664065
oct13362564154
93868740323
101540024428
11720338168
1236b901a10
131b7096c77
1410876156c
1590303803
hex5bcae86c

1540024428 has 12 divisors (see below), whose sum is σ = 3593390360. Its totient is φ = 513341472.

The previous prime is 1540024427. The next prime is 1540024429. The reversal of 1540024428 is 8244200451.

It is an interprime number because it is at equal distance from previous prime (1540024427) and next prime (1540024429).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1540024395 and 1540024404.

It is not an unprimeable number, because it can be changed into a prime (1540024427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64167673 + ... + 64167696.

Almost surely, 21540024428 is an apocalyptic number.

It is an amenable number.

1540024428 is an abundant number, since it is smaller than the sum of its proper divisors (2053365932).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1540024428 is a wasteful number, since it uses less digits than its factorization.

1540024428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128335376 (or 128335374 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 1540024428 is about 39243.1449810027. The cubic root of 1540024428 is about 1154.8064562036.

Adding to 1540024428 its reverse (8244200451), we get a palindrome (9784224879).

The spelling of 1540024428 in words is "one billion, five hundred forty million, twenty-four thousand, four hundred twenty-eight".

Divisors: 1 2 3 4 6 12 128335369 256670738 385006107 513341476 770012214 1540024428