30400747 has 8 divisors (see below), whose sum is σ = 33357744. Its totient is φ = 27532128.

The previous prime is 30400723. The next prime is 30400757. The reversal of 30400747 is 74700403.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30400747 - 2¹⁹ = 29876459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30400757) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21373 + ... + 22750.

It is an arithmetic number, because the mean of its divisors is an integer number (4169718).

Almost surely, 2^30400747 is an apocalyptic number.

30400747 is a deficient number, since it is larger than the sum of its proper divisors (2956997).

30400747 is a wasteful number, since it uses less digits than its factorization.

30400747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44189.

The product of its (nonzero) digits is 2352, while the sum is 25.

The square root of 30400747 is about 5513.6872417648. The cubic root of 30400747 is about 312.1007064509.

The spelling of 30400747 in words is "thirty million, four hundred thousand, seven hundred forty-seven".