36978642 has 12 divisors (see below), whose sum is σ = 80120430. Its totient is φ = 12326208.

The previous prime is 36978619. The next prime is 36978647. The reversal of 36978642 is 24687963.

It can be written as a sum of positive squares in only one way, i.e., 36978561 + 81 = 6081^2 + 9^2 .

It is not an unprimeable number, because it can be changed into a prime (36978647) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1027167 + ... + 1027202.

Almost surely, 2^36978642 is an apocalyptic number.

36978642 is an abundant number, since it is smaller than the sum of its proper divisors (43141788).

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

36978642 is a wasteful number, since it uses less digits than its factorization.

36978642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2054377 (or 2054374 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 36978642 is about 6081.0066600852. The cubic root of 36978642 is about 333.1580560720.

The spelling of 36978642 in words is "thirty-six million, nine hundred seventy-eight thousand, six hundred forty-two".