155709268 has 48 divisors (see below), whose sum is σ = 322628544. Its totient is φ = 64823040.

The previous prime is 155709263. The next prime is 155709293. The reversal of 155709268 is 862907551.

It is a super-2 number, since 2×155709268² = 48490752282191648, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155709263) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77371 + ... + 79357.

It is an arithmetic number, because the mean of its divisors is an integer number (6721428).

Almost surely, 2^155709268 is an apocalyptic number.

It is an amenable number.

155709268 is an abundant number, since it is smaller than the sum of its proper divisors (166919276).

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

155709268 is a wasteful number, since it uses less digits than its factorization.

155709268 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2152 (or 2150 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 43.

The square root of 155709268 is about 12478.3519745197. The cubic root of 155709268 is about 537.9866361159.

The spelling of 155709268 in words is "one hundred fifty-five million, seven hundred nine thousand, two hundred sixty-eight".