77990248 has 32 divisors (see below), whose sum is σ = 167803200. Its totient is φ = 33288192.

The previous prime is 77990243. The next prime is 77990257. The reversal of 77990248 is 84209977.

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 77990198 and 77990207.

It is not an unprimeable number, because it can be changed into a prime (77990243) 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, 11683 + ... + 17101.

It is an arithmetic number, because the mean of its divisors is an integer number (5243850).

Almost surely, 2^77990248 is an apocalyptic number.

It is an amenable number.

77990248 is an abundant number, since it is smaller than the sum of its proper divisors (89812952).

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

77990248 is a wasteful number, since it uses less digits than its factorization.

77990248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5689 (or 5685 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 46.

The square root of 77990248 is about 8831.2087507883. The cubic root of 77990248 is about 427.2480610313.

The spelling of 77990248 in words is "seventy-seven million, nine hundred ninety thousand, two hundred forty-eight".