47872402 has 4 divisors (see below), whose sum is σ = 71808606. Its totient is φ = 23936200.

The previous prime is 47872397. The next prime is 47872403. The reversal of 47872402 is 20427874.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20427874 = 2 ⋅10213937.

It can be written as a sum of positive squares in only one way, i.e., 27342441 + 20529961 = 5229^2 + 4531^2 .

It is not an unprimeable number, because it can be changed into a prime (47872403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11968099 + ... + 11968102.

Almost surely, 2^47872402 is an apocalyptic number.

47872402 is a deficient number, since it is larger than the sum of its proper divisors (23936204).

47872402 is a wasteful number, since it uses less digits than its factorization.

47872402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23936203.

The product of its (nonzero) digits is 25088, while the sum is 34.

The square root of 47872402 is about 6918.9885098907. The cubic root of 47872402 is about 363.1018036932.

The spelling of 47872402 in words is "forty-seven million, eight hundred seventy-two thousand, four hundred two".