47742520 has 32 divisors (see below), whose sum is σ = 122767200. Its totient is φ = 16368768.

The previous prime is 47742509. The next prime is 47742521. The reversal of 47742520 is 2524774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47742521) 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, 84975 + ... + 85534.

It is an arithmetic number, because the mean of its divisors is an integer number (3836475).

Almost surely, 2^47742520 is an apocalyptic number.

47742520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

47742520 is an abundant number, since it is smaller than the sum of its proper divisors (75024680).

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

47742520 is a wasteful number, since it uses less digits than its factorization.

47742520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 170527 (or 170523 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 31.

The square root of 47742520 is about 6909.5962255402. The cubic root of 47742520 is about 362.7731306584.

The spelling of 47742520 in words is "forty-seven million, seven hundred forty-two thousand, five hundred twenty".