731377020 has 48 divisors (see below), whose sum is σ = 2234026368. Its totient is φ = 177303360.

The previous prime is 731376979. The next prime is 731377027. The reversal of 731377020 is 20773137.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (731377027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 553414 + ... + 554733.

It is an arithmetic number, because the mean of its divisors is an integer number (46542216).

Almost surely, 2^731377020 is an apocalyptic number.

It is an amenable number.

731377020 is an abundant number, since it is smaller than the sum of its proper divisors (1502649348).

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

731377020 is a wasteful number, since it uses less digits than its factorization.

731377020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1108170 (or 1108168 counting only the distinct ones).

The product of its (nonzero) digits is 6174, while the sum is 30.

The square root of 731377020 is about 27043.9830646301. The cubic root of 731377020 is about 900.9771362633.

The spelling of 731377020 in words is "seven hundred thirty-one million, three hundred seventy-seven thousand, twenty".