155920648 has 16 divisors (see below), whose sum is σ = 314839980. Its totient is φ = 71963328.

The previous prime is 155920643. The next prime is 155920673. The reversal of 155920648 is 846029551.

It can be written as a sum of positive squares in 2 ways, for example, as 149377284 + 6543364 = 12222^2 + 2558^2 .

It is a super-2 number, since 2×155920648² = 48622496945479808, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 155920648.

It is not an unprimeable number, because it can be changed into a prime (155920643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 749515 + ... + 749722.

Almost surely, 2^155920648 is an apocalyptic number.

It is an amenable number.

155920648 is an abundant number, since it is smaller than the sum of its proper divisors (158919332).

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

155920648 is a wasteful number, since it uses less digits than its factorization.

155920648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1499256 (or 1499252 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 40.

The square root of 155920648 is about 12486.8189704184. The cubic root of 155920648 is about 538.2299703676.

The spelling of 155920648 in words is "one hundred fifty-five million, nine hundred twenty thousand, six hundred forty-eight".