30669420 has 48 divisors (see below), whose sum is σ = 90397440. Its totient is φ = 7747776.

The previous prime is 30669409. The next prime is 30669421. The reversal of 30669420 is 2496603.

It is a super-2 number, since 2×30669420² = 1881226646272800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (30669421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12312 + ... + 14591.

It is an arithmetic number, because the mean of its divisors is an integer number (1883280).

Almost surely, 2^30669420 is an apocalyptic number.

30669420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30669420 is an abundant number, since it is smaller than the sum of its proper divisors (59728020).

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

30669420 is a wasteful number, since it uses less digits than its factorization.

30669420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26934 (or 26932 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 30.

The square root of 30669420 is about 5537.9978331523. The cubic root of 30669420 is about 313.0174297132.

The spelling of 30669420 in words is "thirty million, six hundred sixty-nine thousand, four hundred twenty".