156620478 has 64 divisors (see below), whose sum is σ = 378842112. Its totient is φ = 42197760.

The previous prime is 156620467. The next prime is 156620521. The reversal of 156620478 is 874026651.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69408 + ... + 71628.

It is an arithmetic number, because the mean of its divisors is an integer number (5919408).

Almost surely, 2^156620478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 156620478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (189421056).

156620478 is an abundant number, since it is smaller than the sum of its proper divisors (222221634).

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

156620478 is a wasteful number, since it uses less digits than its factorization.

156620478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2329.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 156620478 is about 12514.8103461459. The cubic root of 156620478 is about 539.0340275203.

The spelling of 156620478 in words is "one hundred fifty-six million, six hundred twenty thousand, four hundred seventy-eight".