7249904928 has 72 divisors (see below), whose sum is σ = 23562197568. Its totient is φ = 2071400832.

The previous prime is 7249904903. The next prime is 7249904953. The reversal of 7249904928 is 8294099427.

It is an interprime number because it is at equal distance from previous prime (7249904903) and next prime (7249904953).

It is a tau number, because it is divible by the number of its divisors (72).

It is a super-2 number, since 2×7249904928² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1796076 + ... + 1800107.

It is an arithmetic number, because the mean of its divisors is an integer number (327252744).

Almost surely, 2^7249904928 is an apocalyptic number.

It is an amenable number.

7249904928 is an abundant number, since it is smaller than the sum of its proper divisors (16312292640).

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

7249904928 is a wasteful number, since it uses less digits than its factorization.

7249904928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3596206 (or 3596195 counting only the distinct ones).

The product of its (nonzero) digits is 2612736, while the sum is 54.

The square root of 7249904928 is about 85146.3735457947. The cubic root of 7249904928 is about 1935.4298602313.

The spelling of 7249904928 in words is "seven billion, two hundred forty-nine million, nine hundred four thousand, nine hundred twenty-eight".