7974504540 has 96 divisors (see below), whose sum is σ = 24834942720. Its totient is φ = 2124360000.

The previous prime is 7974504533. The next prime is 7974504557. The reversal of 7974504540 is 454054797.

7974504540 is a `hidden beast` number, since 7 + 97 + 4 + 504 + 54 + 0 = 666.

It is a super-2 number, since 2×7974504540² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 560515 + ... + 574565.

It is an arithmetic number, because the mean of its divisors is an integer number (258697320).

Almost surely, 2^7974504540 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7974504540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12417471360).

7974504540 is an abundant number, since it is smaller than the sum of its proper divisors (16860438180).

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

7974504540 is a wasteful number, since it uses less digits than its factorization.

7974504540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15120 (or 15112 counting only the distinct ones).

The product of its (nonzero) digits is 705600, while the sum is 45.

The square root of 7974504540 is about 89300.0814109371. The cubic root of 7974504540 is about 1997.8731173201.

The spelling of 7974504540 in words is "seven billion, nine hundred seventy-four million, five hundred four thousand, five hundred forty".