145015400 has 24 divisors (see below), whose sum is σ = 337161270. Its totient is φ = 58006080.

The previous prime is 145015373. The next prime is 145015411. The reversal of 145015400 is 4510541.

It can be written as a sum of positive squares in 3 ways, for example, as 97101316 + 47914084 = 9854^2 + 6922^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 362339 + ... + 362738.

Almost surely, 2^145015400 is an apocalyptic number.

145015400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145015400 is an abundant number, since it is smaller than the sum of its proper divisors (192145870).

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

145015400 is a wasteful number, since it uses less digits than its factorization.

145015400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 725093 (or 725084 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 145015400 is about 12042.2340120096. The cubic root of 145015400 is about 525.3773854997.

Adding to 145015400 its reverse (4510541), we get a palindrome (149525941).

The spelling of 145015400 in words is "one hundred forty-five million, fifteen thousand, four hundred".