744970428 has 36 divisors (see below), whose sum is σ = 1885010400. Its totient is φ = 248074176.

The previous prime is 744970427. The next prime is 744970453. The reversal of 744970428 is 824079447.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-3 number, since 3×744970428³ (a number of 28 digits) contains 333 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (744970423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27901 + ... + 47627.

It is an arithmetic number, because the mean of its divisors is an integer number (52361400).

Almost surely, 2^744970428 is an apocalyptic number.

It is an amenable number.

744970428 is an abundant number, since it is smaller than the sum of its proper divisors (1140039972).

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

744970428 is a wasteful number, since it uses less digits than its factorization.

744970428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20786 (or 20781 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 744970428 is about 27294.1464054108. The cubic root of 744970428 is about 906.5247752892.

It can be divided in two parts, 7449 and 70428, that added together give a palindrome (77877).

The spelling of 744970428 in words is "seven hundred forty-four million, nine hundred seventy thousand, four hundred twenty-eight".