20370615428 has 6 divisors (see below), whose sum is σ = 35648577006. Its totient is φ = 10185307712.

The previous prime is 20370615427. The next prime is 20370615431. The reversal of 20370615428 is 82451607302.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 15867937024 + 4502678404 = 125968^2 + 67102^2 .

It is a junction number, because it is equal to n+sod(n) for n = 20370615391 and 20370615400.

It is not an unprimeable number, because it can be changed into a prime (20370615427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2546326925 + ... + 2546326932.

It is an arithmetic number, because the mean of its divisors is an integer number (5941429501).

Almost surely, 2^20370615428 is an apocalyptic number.

It is an amenable number.

20370615428 is a deficient number, since it is larger than the sum of its proper divisors (15277961578).

20370615428 is a wasteful number, since it uses less digits than its factorization.

20370615428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5092653861 (or 5092653859 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The spelling of 20370615428 in words is "twenty billion, three hundred seventy million, six hundred fifteen thousand, four hundred twenty-eight".