77150020 has 24 divisors (see below), whose sum is σ = 164299968. Its totient is φ = 30424800.

The previous prime is 77150009. The next prime is 77150023. The reversal of 77150020 is 2005177.

It is a junction number, because it is equal to n+sod(n) for n = 77149973 and 77150000.

It is not an unprimeable number, because it can be changed into a prime (77150023) 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, 25746 + ... + 28585.

It is an arithmetic number, because the mean of its divisors is an integer number (6845832).

Almost surely, 2^77150020 is an apocalyptic number.

It is an amenable number.

77150020 is an abundant number, since it is smaller than the sum of its proper divisors (87149948).

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

77150020 is a wasteful number, since it uses less digits than its factorization.

77150020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54411 (or 54409 counting only the distinct ones).

The product of its (nonzero) digits is 490, while the sum is 22.

The square root of 77150020 is about 8783.5084106523. The cubic root of 77150020 is about 425.7081987071.

Adding to 77150020 its reverse (2005177), we get a palindrome (79155197).

The spelling of 77150020 in words is "seventy-seven million, one hundred fifty thousand, twenty".