37894140 has 36 divisors (see below), whose sum is σ = 114946104. Its totient is φ = 10105056.

The previous prime is 37894111. The next prime is 37894141. The reversal of 37894140 is 4149873.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 37894095 and 37894104.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (37894141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105082 + ... + 105441.

Almost surely, 2^37894140 is an apocalyptic number.

37894140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

37894140 is an abundant number, since it is smaller than the sum of its proper divisors (77051964).

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

37894140 is a wasteful number, since it uses less digits than its factorization.

37894140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210538 (or 210533 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 37894140 is about 6155.8216348429. The cubic root of 37894140 is about 335.8850584735.

The spelling of 37894140 in words is "thirty-seven million, eight hundred ninety-four thousand, one hundred forty".