155640360 has 32 divisors (see below), whose sum is σ = 466921440. Its totient is φ = 41504064.

The previous prime is 155640347. The next prime is 155640391. The reversal of 155640360 is 63046551.

155640360 is nontrivially palindromic in base 11.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648382 + ... + 648621.

It is an arithmetic number, because the mean of its divisors is an integer number (14591295).

Almost surely, 2^155640360 is an apocalyptic number.

155640360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155640360 is an abundant number, since it is smaller than the sum of its proper divisors (311281080).

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

155640360 is a wasteful number, since it uses less digits than its factorization.

155640360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297017 (or 1297013 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 155640360 is about 12475.5905671836. The cubic root of 155640360 is about 537.9072637198.

The spelling of 155640360 in words is "one hundred fifty-five million, six hundred forty thousand, three hundred sixty".