74212736 has 64 divisors (see below), whose sum is σ = 161135520. Its totient is φ = 33841152.

The previous prime is 74212703. The next prime is 74212771. The reversal of 74212736 is 63721247.

It is a tau number, because it is divible by the number of its divisors (64).

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171176 + ... + 171608.

Almost surely, 2^74212736 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 74212736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80567760).

74212736 is an abundant number, since it is smaller than the sum of its proper divisors (86922784).

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

74212736 is a wasteful number, since it uses less digits than its factorization.

74212736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 563 (or 551 counting only the distinct ones).

The product of its digits is 14112, while the sum is 32.

The square root of 74212736 is about 8614.6814218519. The cubic root of 74212736 is about 420.2355745706.

The spelling of 74212736 in words is "seventy-four million, two hundred twelve thousand, seven hundred thirty-six".