19640034 has 24 divisors (see below), whose sum is σ = 44793840. Its totient is φ = 6202008.

The previous prime is 19640029. The next prime is 19640057. The reversal of 19640034 is 43004691.

19640034 is a `hidden beast` number, since 19 + 640 + 0 + 3 + 4 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28372 + ... + 29055.

It is an arithmetic number, because the mean of its divisors is an integer number (1866410).

Almost surely, 2^19640034 is an apocalyptic number.

19640034 is an abundant number, since it is smaller than the sum of its proper divisors (25153806).

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

19640034 is a wasteful number, since it uses less digits than its factorization.

19640034 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57454 (or 57451 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 19640034 is about 4431.7077972267. The cubic root of 19640034 is about 269.8033959696.

The spelling of 19640034 in words is "nineteen million, six hundred forty thousand, thirty-four".