7499907072 has 384 divisors, whose sum is σ = 25999045200. Its totient is φ = 2130444288.

The previous prime is 7499907053. The next prime is 7499907133. The reversal of 7499907072 is 2707099947.

It is a tau number, because it is divible by the number of its divisors (384).

It is a super-2 number, since 2×7499907072² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

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, 43351978 + ... + 43352150.

Almost surely, 2^7499907072 is an apocalyptic number.

7499907072 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7499907072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12999522600).

7499907072 is an abundant number, since it is smaller than the sum of its proper divisors (18499138128).

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

7499907072 is an equidigital number, since it uses as much as digits as its factorization.

7499907072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 2000376, while the sum is 54.

The square root of 7499907072 is about 86602.0038567238. The cubic root of 7499907072 is about 1957.4257360884.

The spelling of 7499907072 in words is "seven billion, four hundred ninety-nine million, nine hundred seven thousand, seventy-two".