83432740 has 24 divisors (see below), whose sum is σ = 176097600. Its totient is φ = 33203808.

The previous prime is 83432729. The next prime is 83432747. The reversal of 83432740 is 4723438.

It is a happy number.

It is a super-2 number, since 2×83432740² = 13922044207815200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (83432747) 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, 6502 + ... + 14461.

It is an arithmetic number, because the mean of its divisors is an integer number (7337400).

Almost surely, 2^83432740 is an apocalyptic number.

It is an amenable number.

83432740 is an abundant number, since it is smaller than the sum of its proper divisors (92664860).

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

83432740 is a wasteful number, since it uses less digits than its factorization.

83432740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21171 (or 21169 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 31.

The square root of 83432740 is about 9134.1523963639. The cubic root of 83432740 is about 436.9638427984.

The spelling of 83432740 in words is "eighty-three million, four hundred thirty-two thousand, seven hundred forty".