247680492 has 24 divisors (see below), whose sum is σ = 578622576. Its totient is φ = 82459968.

The previous prime is 247680487. The next prime is 247680493. The reversal of 247680492 is 294086742.

247680492 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×247680492² = 122691252234724128, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (247680493) 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, 1863 + ... + 22334.

It is an arithmetic number, because the mean of its divisors is an integer number (24109274).

Almost surely, 2^247680492 is an apocalyptic number.

It is an amenable number.

247680492 is an abundant number, since it is smaller than the sum of its proper divisors (330942084).

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

247680492 is a wasteful number, since it uses less digits than its factorization.

247680492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25057 (or 25055 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 247680492 is about 15737.8680894205. The cubic root of 247680492 is about 628.0062037063.

The spelling of 247680492 in words is "two hundred forty-seven million, six hundred eighty thousand, four hundred ninety-two".