734782720 has 72 divisors (see below), whose sum is σ = 2011492224. Its totient is φ = 251922432.

The previous prime is 734782717. The next prime is 734782723. The reversal of 734782720 is 27287437.

It is an interprime number because it is at equal distance from previous prime (734782717) and next prime (734782723).

It is a super-2 number, since 2×734782720² = 1079811291221196800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (734782723) 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, 32044 + ... + 49963.

It is an arithmetic number, because the mean of its divisors is an integer number (27937392).

Almost surely, 2^734782720 is an apocalyptic number.

734782720 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

734782720 is an abundant number, since it is smaller than the sum of its proper divisors (1276709504).

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

734782720 is an equidigital number, since it uses as much as digits as its factorization.

734782720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82035 (or 82021 counting only the distinct ones).

The product of its (nonzero) digits is 131712, while the sum is 40.

The square root of 734782720 is about 27106.8758804846. The cubic root of 734782720 is about 902.3734554504.

The spelling of 734782720 in words is "seven hundred thirty-four million, seven hundred eighty-two thousand, seven hundred twenty".