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155140030 = 2515514003
BaseRepresentation
bin10010011111100…
…11111110111110
3101210220221010001
421033303332332
5304203440110
623221104514
73562445203
oct1117637676
9353827101
10155140030
117a633001
1243b5813a
13261ab646
1416865caa
15d94763a
hex93f3fbe

155140030 has 8 divisors (see below), whose sum is σ = 279252072. Its totient is φ = 62056008.

The previous prime is 155139989. The next prime is 155140043. The reversal of 155140030 is 30041551.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7756992 + ... + 7757011.

It is an arithmetic number, because the mean of its divisors is an integer number (34906509).

Almost surely, 2155140030 is an apocalyptic number.

155140030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

155140030 is a deficient number, since it is larger than the sum of its proper divisors (124112042).

155140030 is a wasteful number, since it uses less digits than its factorization.

155140030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15514010.

The product of its (nonzero) digits is 300, while the sum is 19.

The square root of 155140030 is about 12455.5220685445. The cubic root of 155140030 is about 537.3302496230.

Adding to 155140030 its reverse (30041551), we get a palindrome (185181581).

It can be divided in two parts, 155 and 140030, that added together give a triangular number (140185 = T529).

The spelling of 155140030 in words is "one hundred fifty-five million, one hundred forty thousand, thirty".

Divisors: 1 2 5 10 15514003 31028006 77570015 155140030