10155440 has 20 divisors (see below), whose sum is σ = 23611584. Its totient is φ = 4062144.

The previous prime is 10155433. The next prime is 10155451. The reversal of 10155440 is 4455101.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63392 + ... + 63551.

Almost surely, 2^10155440 is an apocalyptic number.

10155440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10155440 is an abundant number, since it is smaller than the sum of its proper divisors (13456144).

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

10155440 is a wasteful number, since it uses less digits than its factorization.

10155440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126956 (or 126950 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 10155440 is about 3186.7601102060. The cubic root of 10155440 is about 216.5540190238.

The spelling of 10155440 in words is "ten million, one hundred fifty-five thousand, four hundred forty".