74648920 has 16 divisors (see below), whose sum is σ = 167960160. Its totient is φ = 29859552.

The previous prime is 74648897. The next prime is 74648923. The reversal of 74648920 is 2984647.

It is a super-2 number, since 2×74648920² = 11144922514332800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40), and also a Moran number because the ratio is a prime number: 1866223 = 74648920 / (7 + 4 + 6 + 4 + 8 + 9 + 2 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74648923) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 933072 + ... + 933151.

It is an arithmetic number, because the mean of its divisors is an integer number (10497510).

Almost surely, 2^74648920 is an apocalyptic number.

It is an amenable number.

74648920 is an abundant number, since it is smaller than the sum of its proper divisors (93311240).

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

74648920 is a wasteful number, since it uses less digits than its factorization.

74648920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866234 (or 1866230 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 40.

The square root of 74648920 is about 8639.9606480585. The cubic root of 74648920 is about 421.0572757931.

It can be divided in two parts, 7464 and 8920, that added together give a 14-th power (16384 = 2¹⁴).

The spelling of 74648920 in words is "seventy-four million, six hundred forty-eight thousand, nine hundred twenty".