30428791392 has 48 divisors (see below), whose sum is σ = 80321855040. Its totient is φ = 10086260352.

The previous prime is 30428791387. The next prime is 30428791397. The reversal of 30428791392 is 29319782403.

It is an interprime number because it is at equal distance from previous prime (30428791387) and next prime (30428791397).

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×30428791392² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30428791397) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 868198 + ... + 902565.

It is an arithmetic number, because the mean of its divisors is an integer number (1673371980).

Almost surely, 2^30428791392 is an apocalyptic number.

30428791392 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30428791392 is an abundant number, since it is smaller than the sum of its proper divisors (49893063648).

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

30428791392 is a wasteful number, since it uses less digits than its factorization.

30428791392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1770955 (or 1770947 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 48.

The spelling of 30428791392 in words is "thirty billion, four hundred twenty-eight million, seven hundred ninety-one thousand, three hundred ninety-two".