47749632 has 80 divisors (see below), whose sum is σ = 145413312. Its totient is φ = 13639680.

The previous prime is 47749621. The next prime is 47749687. The reversal of 47749632 is 23694774.

It is a super-2 number, since 2×47749632² = 4560054712270848, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 8532 + ... + 12972.

Almost surely, 2^47749632 is an apocalyptic number.

47749632 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 47749632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72706656).

47749632 is an abundant number, since it is smaller than the sum of its proper divisors (97663680).

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

47749632 is an equidigital number, since it uses as much as digits as its factorization.

47749632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4469 (or 4453 counting only the distinct ones).

The product of its digits is 254016, while the sum is 42.

The square root of 47749632 is about 6910.1108529458. The cubic root of 47749632 is about 362.7911433537.

The spelling of 47749632 in words is "forty-seven million, seven hundred forty-nine thousand, six hundred thirty-two".