2407928021 has 6 divisors (see below), whose sum is σ = 2411368470. Its totient is φ = 2404491656.

The previous prime is 2407927999. The next prime is 2407928041. The reversal of 2407928021 is 1208297042.

It can be written as a sum of positive squares in only one way, i.e., 1725987025 + 681940996 = 41545^2 + 26114^2 .

It is a de Polignac number, because none of the positive numbers 2^k-2407928021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2407928041) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1408115 + ... + 1409823.

It is an arithmetic number, because the mean of its divisors is an integer number (401894745).

Almost surely, 2^2407928021 is an apocalyptic number.

It is an amenable number.

2407928021 is a deficient number, since it is larger than the sum of its proper divisors (3440449).

2407928021 is an frugal number, since it uses more digits than its factorization.

2407928021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4083 (or 2896 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 35.

The square root of 2407928021 is about 49070.6431688031. The cubic root of 2407928021 is about 1340.3385238501.

The spelling of 2407928021 in words is "two billion, four hundred seven million, nine hundred twenty-eight thousand, twenty-one".