156400450 has 12 divisors (see below), whose sum is σ = 290904930. Its totient is φ = 62560160.

The previous prime is 156400441. The next prime is 156400463. The reversal of 156400450 is 54004651.

It can be written as a sum of positive squares in 3 ways, for example, as 108555561 + 47844889 = 10419^2 + 6917^2 .

It is a super-2 number, since 2×156400450² = 48922201520405000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

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 5 ways as a sum of consecutive naturals, for example, 1563955 + ... + 1564054.

Almost surely, 2^156400450 is an apocalyptic number.

156400450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

156400450 is a deficient number, since it is larger than the sum of its proper divisors (134504480).

156400450 is a wasteful number, since it uses less digits than its factorization.

156400450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3128021 (or 3128016 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 25.

The square root of 156400450 is about 12506.0165520441. The cubic root of 156400450 is about 538.7814888922.

The spelling of 156400450 in words is "one hundred fifty-six million, four hundred thousand, four hundred fifty".