155462440 has 64 divisors (see below), whose sum is σ = 403574400. Its totient is φ = 52793088.

The previous prime is 155462431. The next prime is 155462477. The reversal of 155462440 is 44264551.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27366 + ... + 32554.

It is an arithmetic number, because the mean of its divisors is an integer number (6305850).

Almost surely, 2^155462440 is an apocalyptic number.

155462440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 155462440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (201787200).

155462440 is an abundant number, since it is smaller than the sum of its proper divisors (248111960).

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

155462440 is a wasteful number, since it uses less digits than its factorization.

155462440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5314 (or 5310 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 31.

The square root of 155462440 is about 12468.4578035938. The cubic root of 155462440 is about 537.7022163237.

The spelling of 155462440 in words is "one hundred fifty-five million, four hundred sixty-two thousand, four hundred forty".