731214648 has 32 divisors (see below), whose sum is σ = 2031152400. Its totient is φ = 243738144.

The previous prime is 731214641. The next prime is 731214667. The reversal of 731214648 is 846412137.

731214648 is a `hidden beast` number, since 7 + 3 + 1 + 2 + 1 + 4 + 648 = 666.

It is a super-2 number, since 2×731214648² = 1069349722899527808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731214641) 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, 1692411 + ... + 1692842.

Almost surely, 2^731214648 is an apocalyptic number.

It is an amenable number.

731214648 is an abundant number, since it is smaller than the sum of its proper divisors (1299937752).

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

731214648 is a wasteful number, since it uses less digits than its factorization.

731214648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3385268 (or 3385258 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 731214648 is about 27040.9808993683. The cubic root of 731214648 is about 900.9104564328.

The spelling of 731214648 in words is "seven hundred thirty-one million, two hundred fourteen thousand, six hundred forty-eight".