620401392 has 120 divisors (see below), whose sum is σ = 1881178208. Its totient is φ = 189734400.

The previous prime is 620401391. The next prime is 620401393. The reversal of 620401392 is 293104026.

620401392 is a `hidden beast` number, since 620 + 4 + 0 + 1 + 39 + 2 = 666.

620401392 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (620401391) and next prime (620401393).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620401391) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 337917 + ... + 339747.

Almost surely, 2^620401392 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 620401392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (940589104).

620401392 is an abundant number, since it is smaller than the sum of its proper divisors (1260776816).

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

620401392 is a wasteful number, since it uses less digits than its factorization.

620401392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2039 (or 2030 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 620401392 is about 24907.8580371737. The cubic root of 620401392 is about 852.8858735351.

The spelling of 620401392 in words is "six hundred twenty million, four hundred one thousand, three hundred ninety-two".