7251680100 has 72 divisors (see below), whose sum is σ = 23978895808. Its totient is φ = 1657526400.

The previous prime is 7251680099. The next prime is 7251680129. The reversal of 7251680100 is 10861527.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1724491 + ... + 1728690.

Almost surely, 2^7251680100 is an apocalyptic number.

7251680100 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

7251680100 is an abundant number, since it is smaller than the sum of its proper divisors (16727215708).

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

7251680100 is a wasteful number, since it uses less digits than its factorization.

7251680100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453205 (or 3453198 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 30.

The square root of 7251680100 is about 85156.7971450312. The cubic root of 7251680100 is about 1935.5878135907.

The spelling of 7251680100 in words is "seven billion, two hundred fifty-one million, six hundred eighty thousand, one hundred".