35991972 has 48 divisors (see below), whose sum is σ = 95845120. Its totient is φ = 11671776.

The previous prime is 35991953. The next prime is 35991983. The reversal of 35991972 is 27919953.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 508 + ... + 8499.

Almost surely, 2^35991972 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 35991972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47922560).

35991972 is an abundant number, since it is smaller than the sum of its proper divisors (59853148).

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

35991972 is a wasteful number, since it uses less digits than its factorization.

35991972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9057 (or 9049 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 35991972 is about 5999.3309626991. The cubic root of 35991972 is about 330.1681787389.

It can be divided in two parts, 35991 and 972, that added together give a palindrome (36963).

The spelling of 35991972 in words is "thirty-five million, nine hundred ninety-one thousand, nine hundred seventy-two".