74135772 has 18 divisors (see below), whose sum is σ = 187398848. Its totient is φ = 24711912.

The previous prime is 74135771. The next prime is 74135791. The reversal of 74135772 is 27753147.

74135772 is a `hidden beast` number, since 74 + 13 + 577 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×74135772² = 10992225380071968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 2059327 = 74135772 / (7 + 4 + 1 + 3 + 5 + 7 + 7 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74135771) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1029628 + ... + 1029699.

Almost surely, 2^74135772 is an apocalyptic number.

It is an amenable number.

74135772 is an abundant number, since it is smaller than the sum of its proper divisors (113263076).

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

74135772 is a wasteful number, since it uses less digits than its factorization.

74135772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2059337 (or 2059332 counting only the distinct ones).

The product of its digits is 41160, while the sum is 36.

The square root of 74135772 is about 8610.2132377776. The cubic root of 74135772 is about 420.0902527133.

The spelling of 74135772 in words is "seventy-four million, one hundred thirty-five thousand, seven hundred seventy-two".