30492240 has 40 divisors (see below), whose sum is σ = 94526688. Its totient is φ = 8131200.

The previous prime is 30492221. The next prime is 30492257. The reversal of 30492240 is 4229403.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 30492240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63286 + ... + 63765.

Almost surely, 2^30492240 is an apocalyptic number.

30492240 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30492240 is an abundant number, since it is smaller than the sum of its proper divisors (64034448).

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

30492240 is a wasteful number, since it uses less digits than its factorization.

30492240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127067 (or 127061 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30492240 is about 5521.9779065114. The cubic root of 30492240 is about 312.4134885860.

The spelling of 30492240 in words is "thirty million, four hundred ninety-two thousand, two hundred forty".