977540730 has 16 divisors (see below), whose sum is σ = 2346097824. Its totient is φ = 260677520.

The previous prime is 977540719. The next prime is 977540731. The reversal of 977540730 is 37045779.

It is not an unprimeable number, because it can be changed into a prime (977540731) 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, 16292316 + ... + 16292375.

It is an arithmetic number, because the mean of its divisors is an integer number (146631114).

Almost surely, 2^977540730 is an apocalyptic number.

977540730 is an abundant number, since it is smaller than the sum of its proper divisors (1368557094).

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

977540730 is a wasteful number, since it uses less digits than its factorization.

977540730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32584701.

The product of its (nonzero) digits is 185220, while the sum is 42.

The square root of 977540730 is about 31265.6477623605. The cubic root of 977540730 is about 992.4568201726.

It can be divided in two parts, 9775 and 40730, that added together give a palindrome (50505).

The spelling of 977540730 in words is "nine hundred seventy-seven million, five hundred forty thousand, seven hundred thirty".