77219030 has 16 divisors (see below), whose sum is σ = 158850720. Its totient is φ = 26475072.

The previous prime is 77219017. The next prime is 77219033. The reversal of 77219030 is 3091277.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 77218984 and 77219002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77219033) 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, 551495 + ... + 551634.

It is an arithmetic number, because the mean of its divisors is an integer number (9928170).

Almost surely, 2^77219030 is an apocalyptic number.

77219030 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

77219030 is an abundant number, since it is smaller than the sum of its proper divisors (81631690).

77219030 is a wasteful number, since it uses less digits than its factorization.

77219030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103143.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 77219030 is about 8787.4359172628. The cubic root of 77219030 is about 425.8350915999.

The spelling of 77219030 in words is "seventy-seven million, two hundred nineteen thousand, thirty".