30404970 has 40 divisors (see below), whose sum is σ = 81757764. Its totient is φ = 8107776.

The previous prime is 30404953. The next prime is 30404971. The reversal of 30404970 is 7940403.

It can be written as a sum of positive squares in 2 ways, for example, as 30041361 + 363609 = 5481^2 + 603^2 .

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

It is not an unprimeable number, because it can be changed into a prime (30404971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 17959 + ... + 19578.

Almost surely, 2^30404970 is an apocalyptic number.

30404970 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30404970 is an abundant number, since it is smaller than the sum of its proper divisors (51352794).

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

30404970 is a wasteful number, since it uses less digits than its factorization.

30404970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37556 (or 37547 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30404970 is about 5514.0701845370. The cubic root of 30404970 is about 312.1151571951.

The spelling of 30404970 in words is "thirty million, four hundred four thousand, nine hundred seventy".