20077124 has 6 divisors (see below), whose sum is σ = 35134974. Its totient is φ = 10038560.

The previous prime is 20077121. The next prime is 20077133. The reversal of 20077124 is 42177002.

It can be written as a sum of positive squares in only one way, i.e., 20070400 + 6724 = 4480^2 + 82^2 .

It is a super-2 number, since 2×20077124² = 806181816222752, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20077124.

It is not an unprimeable number, because it can be changed into a prime (20077121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2509637 + ... + 2509644.

It is an arithmetic number, because the mean of its divisors is an integer number (5855829).

Almost surely, 2^20077124 is an apocalyptic number.

It is an amenable number.

20077124 is a deficient number, since it is larger than the sum of its proper divisors (15057850).

20077124 is a wasteful number, since it uses less digits than its factorization.

20077124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5019285 (or 5019283 counting only the distinct ones).

The product of its (nonzero) digits is 784, while the sum is 23.

The square root of 20077124 is about 4480.7503835853. The cubic root of 20077124 is about 271.7902253678.

The spelling of 20077124 in words is "twenty million, seventy-seven thousand, one hundred twenty-four".