2151307404 has 48 divisors (see below), whose sum is σ = 5581578240. Its totient is φ = 716573520.

The previous prime is 2151307397. The next prime is 2151307409. The reversal of 2151307404 is 4047031512.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2151307409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 156597 + ... + 169779.

It is an arithmetic number, because the mean of its divisors is an integer number (116282880).

Almost surely, 2^2151307404 is an apocalyptic number.

It is an amenable number.

2151307404 is an abundant number, since it is smaller than the sum of its proper divisors (3430270836).

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

2151307404 is a wasteful number, since it uses less digits than its factorization.

2151307404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14707 (or 14699 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 2151307404 is about 46382.1884347860. The cubic root of 2151307404 is about 1290.9244428278.

Adding to 2151307404 its reverse (4047031512), we get a palindrome (6198338916).

The spelling of 2151307404 in words is "two billion, one hundred fifty-one million, three hundred seven thousand, four hundred four".