747297428 has 6 divisors (see below), whose sum is σ = 1307770506. Its totient is φ = 373648712.

The previous prime is 747297427. The next prime is 747297437. The reversal of 747297428 is 824792747.

It can be written as a sum of positive squares in only one way, i.e., 632421904 + 114875524 = 25148^2 + 10718^2 .

It is a super-4 number, since 4×747297428⁴ (a number of 37 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747297427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 93412175 + ... + 93412182.

It is an arithmetic number, because the mean of its divisors is an integer number (217961751).

Almost surely, 2^747297428 is an apocalyptic number.

It is an amenable number.

747297428 is a deficient number, since it is larger than the sum of its proper divisors (560473078).

747297428 is a wasteful number, since it uses less digits than its factorization.

747297428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186824361 (or 186824359 counting only the distinct ones).

The product of its digits is 1580544, while the sum is 50.

The square root of 747297428 is about 27336.7413566431. The cubic root of 747297428 is about 907.4676720239.

The spelling of 747297428 in words is "seven hundred forty-seven million, two hundred ninety-seven thousand, four hundred twenty-eight".