2157464 has 8 divisors (see below), whose sum is σ = 4045260. Its totient is φ = 1078728.

The previous prime is 2157457. The next prime is 2157481. The reversal of 2157464 is 4647512.

2157464 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×2157464² = 9309301822592, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 134834 + ... + 134849.

2^2157464 is an apocalyptic number.

It is an amenable number.

2157464 is a deficient number, since it is larger than the sum of its proper divisors (1887796).

2157464 is a wasteful number, since it uses less digits than its factorization.

2157464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269689 (or 269685 counting only the distinct ones).

The product of its digits is 6720, while the sum is 29.

The square root of 2157464 is about 1468.8308275632. The cubic root of 2157464 is about 129.2154722722.

The spelling of 2157464 in words is "two million, one hundred fifty-seven thousand, four hundred sixty-four".