30772440 has 64 divisors (see below), whose sum is σ = 102578400. Its totient is φ = 8205696.

The previous prime is 30772433. The next prime is 30772447. The reversal of 30772440 is 4427703.

It is an interprime number because it is at equal distance from previous prime (30772433) and next prime (30772447).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30772447) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13167 + ... + 15326.

Almost surely, 2^30772440 is an apocalyptic number.

30772440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30772440 is an abundant number, since it is smaller than the sum of its proper divisors (71805960).

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

30772440 is a wasteful number, since it uses less digits than its factorization.

30772440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28513 (or 28503 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 30772440 is about 5547.2912308621. The cubic root of 30772440 is about 313.3675180248.

The spelling of 30772440 in words is "thirty million, seven hundred seventy-two thousand, four hundred forty".